The Xi‘an Trade Fair consists of a total of seven halls. In the first phase, four of these halls were built. In ground plan the halls measure 144 x 72 m. On the longsides of the halls there are two massive walls made of reinforced concrete and stonework. The roof structure is situated at a height of 14.5 m, and rests on steel columns being carried by the walls. The barrel-shaped steel roofs have a free span of 66 m. The front sides of the halls are completely glazed.